Analysis of thermal stress in K9 glass irradiated by pulsed CO2 laser

作者：Wang Xi; Fang Xiaodong^*

来源：High Power Laser and Particle Beams, 2014, 26(5).

DOI：10.11884/HPLPB201426.051006

• Circular stress
• Damage effects
• K9 glass
• Laser-induced damage resistances
• Optimal radius
• Pulsed CO
• Theoretical modeling
• Time characteristics

According to the theoretical model of K9 glass irradiated by pulsed CO2 laser, a numerical simulation was performed to calculate thermal stress distribution in K9 glass sample irradiated by pulsed CO2 laser. The time characteristic of the thermal stress was demonstrated. On the basis of the analysis of damage results, an optimal radius was presented to express the laser-induced damage resistance of K9 glass. The simulation results indicated that the damage effect was dominated by circular stress. Moreover, this thermal stress would diffuse as shock wave and oscillated obviously inside of the K9 glass sample. The simulation results also showed that the effect of laser irradiation on samples can be affected considerably by the change of radius of the sample. Finally, the universality of the proposed optimal radius of K9 glass was validated.

• 出版日期2014
• 单位中国科学技术大学